Keyphrases
- spatial pyramid matching
- sparse coding
- image classification
- bag of words
- image representation
- scene classification
- visual words
- dictionary learning
- natural images
- sparse representation
- image features
- linear combination
- text classification
- visual features
- multiple scales
- unsupervised learning
- feature space
- bag of features
- action recognition
- object recognition
- feature extraction
- image regions
- image patches
- generative model
- input image
- high dimensional
- test images
- multiscale
- biologically inspired
- image processing
- image data